<script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script>
<script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script>
<script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script>

<script type="text/babel">
    function HelloMessage(props) {
        return <h1>Hello React22!</h1>;
    }

    ReactDOM.render(<HelloMessage />, document.getElementById('example'));
</script>

<body>
    <div id="example"></div>
</body>